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RF Modem Robotics Project

RF Modem Robotics Project
Rob Arnold writes:RF is just way too cool not to use in your designs. But if you’re a newbie like me it is difficult to successfully build solid RF transmitters and receivers. When I started out I didn’t realize that the larger breadboard I was working off of was causing a lot of the signal deviance because the metal traces on the breadboard worked like small capacitors and changed my circuit dynamics. So after much research I found the Reynolds Electronics RWS and TWS 434 RX/TX pair. I looked into a similar product by MING Microsystems and Radioshack but the Reynolds were superior in performance, cost and ease of use. So with that and two PIC16F84’s I started working on my serial RF link from my control interface (Joystick) to my robot. [more]

Posted in : PIC projects | RF projects | robot projects

Timer Project

Timer Project
This is a PIC16F877 based Timer.The outputs consist of a single 7-segment LED display and a piezo speaker . The inputs consist of a 10-position “BCD” rotary switch (for digit entry), two pushbuttons (set and start/stop), and two bits of a 8-position DIP switch (timer selection).The breadboard on the right of the photo contains the microcontroller (PIC16F877) and most of the other components of the timer; the breadboard on the left contains the serial-port adapter circuit used for programming and the DIP switch.[more]

Posted in : PIC projects

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